"Just because the show's 30, it doesn't make it a boomer," the 'Stranger Things' actor teased of the award show

David Harbour, known for his role as Jim Hopper in Stranger Things, and his wife, singer-actress Lily Allen, have decided to end their marriage after four years. The couple, who married in 2020, have been facing relationship challenges and have mutually agreed to separate.

David Harbour stepped out for the first time since his split from Lily Harbour at the Critics Choice Awards. A source exclusively confirmed to PEOPLE on Feb. 3 that Harbour and Allen were parting ways after four years of marriage.

Lily Allen and David Harbour have separated after four years of marriage, multiple sources told PEOPLE in a report published Monday, Feb. 3. Confirmation of the split comes after months of rumors about the Stranger Things actor,

For several years, the pair appeared to be the picture of wedded bliss, settling down with Allen's two children, Ethel and Marnie, in a Brooklyn townhouse that the duo completely transformed into a "weird and wonderful" paradise filled with eccentric decor.

Lily Allen and David Harbour are separating four years after they married in September 2024, multiple sources confirm to PEOPLE. "Her marriage has been crumbling," an insider tells PEOPLE exclusively,

David Harbour attends the 2025 Critics Choice Awards without his wedding ring after his split from Lily Allen.

Stranger Things star David Harbour attended the Critics Choice Awards 2025 in Santa Monica Feb. 7, marking his first appearance since his reported breakup with wife Lily Allen.